Give reasons for the following-
(a) Soil is not a mineral.
(b) Minerals are called natural substances.
Answers
Soil is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life.
so it is not a mineral
Minerals are most commonly associated with rocks due to the presence of minerals within rocks. These rocks may consist of one type of mineral, or may be an aggregate of two or more different types of minerals, spacially segregated into distinct phases.so they are called natural substances
Answer:
Soil is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life.
Some of the most common minerals found in soil are, Iron, Potassium, Magnesium, Calcium, Sulphur etc. Humus: Humus is the organic substances that are formed due to decomposition of dead and decomposing plants and animals. It lends the soil its fertility.
we also have poor/bad soil
Poor soil is either too heavy (clay soil which holds nutrients and water but doesn't drain well, and can be hard for the plant roots to push through), or too light (sandy soil which drains very well, but means water and nutrients can just wash away).
that is why soil is not a mineral.
MINERALS ARE CALLED NATURAL SUBSTANCES.
Naturally occurring" means that people did not make it. Steel is not a mineral because it is an alloy produced by people. ... "Definite chemical composition" means that all occurrences of that mineral have a chemical composition that varies within a specific limited range.
Minerals are substances that are formed naturally in the Earth. They are the building blocks of rocks. Minerals are usually solid, inorganic, have a crystal structure, and form naturally by geological processes. ... A mineral can be made of single chemical element or more usually a compound.
properties of minerals
Color.
Streak.
Hardness.
Cleavage or Fracture.
Crystalline Structure.
Diaphaneity or Amount of Transparency.
Tenacity.
Magnetism.